The Union 3K74E 80mm BS3621 Kitemarked Sashlock Polished Brass is a commonly used lock for household external doors and is available with brass or silver forend and strike box. The Chubb name is no longer used to market the 3K74E as it now comes under the banner of Union (Assa Abloy), and it still comes with the familiar brass key blank associated with the old Chubb brand.

The deadbolt is locked or unlocked by the key from either side whilst the roller latchbolt is withdrawn by the lever handle fitted to either side. The roller latchbolt means the lock is suitable for either left hand or right hand hung doors without the need for reversal.

Other Variations

The lock is also available with an 67mm case size (44mm backset) and with a satin chrome finish. Some of these variations can be found in the related products.

BS3621 Insurance Company Approved

Like all BS3621 approved locks the 3K74E is kitemarked and most household insurance companies insist on the use of at least one approved kitemarked lock per external door.

Rebates are available if required and we can key alike a series of locks for convenience, please contact customer services for further information, however allow us time to key your locks alike.